[Is it necessary to operate on small abdominal aortic aneurysms?]

Area of Science:

• Vascular Surgery
• Aortic Aneurysm Research
• Diagnostic Imaging

Context:

• Surgical intervention for aortic aneurysms ≥5 cm is well-established.
• Management of small aortic aneurysms (≤4 cm) presents ongoing clinical challenges.
• Aortic aneurysms affect approximately 45/100,000 men and 20/100,000 women.

Purpose:

• To review the current challenges and indications for surgical treatment of small aortic aneurysms.
• To discuss factors influencing the decision-making process for small aortic aneurysm management.

Summary:

• While large aneurysms (≥5 cm) have clear surgical indications, small aortic aneurysms (≤4 cm) require careful consideration.
• Rupture risk in small aneurysms is debated, with some studies reporting 0% incidence and others up to 9%.
• Key factors for surgical consideration in small aneurysms include presence of intramural clot, irregular morphology indicating wall weakening (detectable by CT or MRI), and mycotic etiology.

Impact:

• This review aims to refine surgical indications for small aortic aneurysms, potentially reducing unnecessary interventions and improving patient outcomes.
• Highlights the importance of advanced imaging (CT, MRI) in assessing small aneurysm risk.
• Emphasizes the role of intramural thrombus and aneurysm morphology in predicting rupture risk and guiding treatment strategies.